Improved paper-making machine



TTnD STATES PATENT QFFICE.

IMPROVED PAPER-MAKING- MACHINE.

Specljiccttion forming part of Letters Patent No. 92,596, elated July 13,1869.

Tov all 'whom flt 'may concern:

Be it known that I, ELIAS T. FORD, of the town of Stillwater, county of Saratoga and State of New York, have invented new and useful improvements in the construction of a perforated roll or cylinder, and an interior suction-chamber, having recesses for the reception of rubber, and being incased with metal, for the purpose of avoiding friction to the interior surface of the cylinder and preventing the inlet of air; also, preventing all friction to the endless wire apron rotating with the cylinder B; and I do hereby declare that the following is an exact and full description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, like letters referring to like parts in all the drawings.

The nature of my invention consists in the manner of constructing the cylinder with anv interior suction-chamber, with tubular journals, and the manner of forming a vacuum within the chamber, thereby producing a draft upon the surplus water contained within the pulp or sheet of ,paper adhering to the endless wire apron moving upon and with the perforated 'cylinder B, and as arranged with the two couch-rolls; transfer.

ring the sheet of paper upon the felt, and avoiding all friction to the endless wire cloth or apron used in the art of making paper.

y And to enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

Figure 1 represents the perforated cylinder A, with portions left off, showing the interior suction-chamber g, and as arranged with the endless wire apon, couch-rolls D D e, felt J, and levers T T. Fig. 2 illustrates the cylinder B, with suction-box W partly inserted. Fig. 9 is another view of the suction-chamber g or box, showingthe interior portion more perfectly. Figs. S and 11 are detached sections of Figs. l and 2.

Fig. 2 represents, in a perspective view, the perforated cylinder B, with the suction-box W or chamber partly inserted. A part of the cylinder B is broken off in order to show the location o f' the suction-box W, and the position of the box, with the pistons or slides O G, when held stationary by the frames L L.

' (Seen at the right in Fig. l.)

. again,

sides,

In Fig. 9 is seen, in perspective also, the suction-chamber W, with the orifices t" r tt made within the front side b ze. The back portion of the box W is formed nearly square,

the upper side b z extending forward, and is bent at right angles to the rear side or bot tom, and upon this rear side b z I erectthe flange or packing-plate d, it being at right angles to the side bz, thereby providing a recess for the rubber packing z, (seen near Fig. 11.) The packing z is now located, and covered with the metal cap or plate t', (also seen in Fig. 11,) the side v of plate I coming in contact with the rear plate cl, as presented in Fig. 9.

The side b z extends to the front, similar to the side b se, and is bentat right angle thereby forming the depth of the recess through which I cut the orices t t; also, through the side b ae, the oblongorifices r r are made. l l

The flange or rib S is connected to the lower surface of the side b fr, in the same manner as the flange d, extending nearly the whole length of the box W. I now locate the rubber packing z within this recess thus provided, and cap or cover the rubber z with the oval plate I. One of its sides, e, is left off, and the opposite side c coming in contact with the lower flanges S. The sides b .r b z are connected to the end plates M M h h, through vwhich the tubular bearings N N pass, communicating with the interior portion g, and the plates are so adjusted as to form cavities or recesses for the reception of the rubber packing. This packing I do not cover with metal.

In Fig. 8 is seen the construction of the composed of two platesv O C, correspondin g to .the interior surface of y the charn ber g, and provided with rubber packing placed between the plates C C, through which I insert the tubes K K. The metal cap V (seen near Fig. 8) covers the rubber packing at the top, and the side plates C C are constructed circular, the'same as the end plates M M h h, they corresponding'to the interior surface o'f the perforated shell'B at the top.

I arrange the two plungers or slides C C within the interior portion of the suctionchamber g, near each extremity of the same,

andthe tubes K K of each slide C `are iu- `Serted through the tubular bearings N N of box W, as seen arranged in Fig. 2, as before referred to. The tubes K K of slides C G are so bent as to extend near to the lower portion of the chamber g, as seen with the left slide C in Fig. 2.

One head, F, belonging tothe cylinder B, is seen near Fig. l1, and made adjustable for the purpose of putting within and taking out the suction-box W, while the opposite head F may be secured lirmly with screws or their equivalents, vthe heads F F supporting the suction-box W' within the cylinder B.

The cylinder B is mounted upon the basesection U U, (seenv in Fig. g, 1,) and supported by the two frames L L, one of each vplaced upon the bearings N of the suctionbox W located upon each extremity, (one of which is seen at the right portion of cylinder B in Fig. 1.)

The sections L L are so constructed as to embrace the bearings N N, and made rigid thereto by means of the set-screws o o.

The couch-levers T T are hinged by a basebar to the lugs upon the section U, and are arranged upon each side of the cylinder B, embracing each bearing w of the front and the intermediate couch-rolls D D e, and they are braced at the top by the extension-bars E and R. The levers T T each have extend ing arms a a with elongated orifices, and` holding the journals fw w of the intermediate couch-roll D e, allowing the journals to move longitudinally within the same, caused by the pressure of the front roll D and weights L n L n, applied upon the rear extremities of the levers T T. The weights. L u can be removed, and 4the levers T T, holding the two rolls D D e, turned over toward the front, apart from and out of the way of the cylinder B, furnishing ample space to pass between in arranging the wire apron.

The drive-gear y is placed upon the left portion of the left bearing N of suction-cham ber W.

The slides C G, with their tubular pistonshafts K K, are adjustable, moving within the ltubular bearings N N, and the metallic plates V V and I I are ground with emery, and fitted to the interior surface of the cylinder B, thereby establishing an air-chamber, g, between the slides C C in their different adjustments and the sides b fr, b z.

The position of the suction-box W, located Within the cylinder B, is turned down a little below the center of the cylinder B, and the intermediate couch-roll D e is arranged upon a line with the lower side or plate I, while the upper side or plate I of the suctionchamber g comes in contact with the endless wire apron A, upon the top surface of the shell B, or may be a little forward from a perpendicular line of the center, and as the wire apron wraps the front surface of the perforated cylinder B, and is pressed snugly by the tension of the wire, thereby prevent ing the inlet of air coming between the wire and shell B into the chamber g, and at the same time a'ording greater suction-surface to the sheet of paper adhering to the wire pron.

A portion of the wire apron and the shell is broken olf in order to show the position of4 the suction-box W, wire A, and couch D e.

The front couch D, bearing the wet felt J,

may be arranged upon a line with the intermediate couch-roll D e. The couch-roll D e is covered with a felt sleeve, as well as Vthe front couch-roll D. Thelower `packing-plate I of suction-box W projects above the orifices t t, as seen iu Fig. 9. l

Operation: And as the liquid pulp is permitted to ilow and forminto a sheet of paper upon the moving endless wire apron, and driven by the gearv y upon the shell B, the sheet of paper passing over the suctionsurface of the chamber y, the surplus water contained within the sheet is extracted, and drawn through the wire cloth and perforations of the cylinder B into the chamber g, from thence is conducted to the right or left through the tubes K K, and discharged from the chamber g, caused by producing a vacuum Within the chamber g, by means of doubleacting suction-pumps or Siphon-pipes, they being connected to the outer extremities of two or one of the piston-tubes K K, continually drawing the water and air from the chamber g, keeping the water lower than the couch-line. I`

A portion of the water thus accumulated within is gathered from the front interior surface of the shell B by the upper edge of the metal plate I, the water passing through the small orifices t t into and through the oblongorifices 'r r r to thelower portion of the air and, water chamber g, and beingin contact with the bent conducting-tube K`,as before stated; and at the same time, bythe pressure produced by the front and intermediate rolls D and D e, communicated to the wire cloth, the sheet is transferred from the wire apron to the wet felt J, avoiding all friction or wear to the wire. Their movements are indicated by the arrow.

Having thusdescribed my invention, what I claim is w 1. The forming a vacuum inside of the perforated cylinder B by means of the air-chamber W g, as described in the above specifica- 2. The perforated cylinder B, with interior suction-box W, carrying the wire cloth A without friction or wear, in the manufacture of paper, as described, and illustrated in the drawings. h

3. The intermediate couch-roll D e, for the purpose specified.

4. The rubber packing z z and recesses b rv,

b z, the metallic plates I I, and plunger-paokdouble couch-rolls D e D, as herein set forth ing G, with their metallic caps V V. and described, substantially as and for the 5. The combination of the perforated cylpurpose specitied. l

` inder B with the inside suction-box W g, Y ELIAS T. FORD.

plungers C C, metallic caps V V, with their Witnesses: interior packing G; also, the side rubber pack- T. BAKER,

ing z z, with the metallic caps I I, and the E. A. HANNAY. 

